Battery module welding device

Abstract

The utility model discloses a battery module welding device, and belongs to the technical field of battery module production. The battery module welding device comprises a supporting piece, a rotating piece and a fixing piece. The rotating part is rotationally arranged on the first side of the supporting part around the X axis, the to-be-welded module is arranged on the second side of the rotating part, and the rotating part is used for driving the first opening or the second opening of the to-be-welded module to rotate to the welding position; the fixing piece is arranged on the second side of the rotating piece, and the fixing piece can fix the to-be-welded module to the rotating piece. According to the battery module welding device, by arranging the rotating piece capable of driving the to-be-welded module to synchronously rotate, direct exchange between the top and the bottom of the to-be-welded module is achieved, the to-be-welded module does not need to be repeatedly mounted and dismounted, and the welding efficiency of the battery module can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery module production technical field especially relates to battery module welding device. BACKGROUND

[0002] At present, the battery module includes a shell, a plurality of battery monomers, a first end cover and a second end cover, the plurality of battery monomers are arranged in the shell, so that the shell can provide protection for the battery monomers, and the shell has a first opening and a second opening arranged oppositely, and the first end cover and the second end cover are welded to the first opening and the second opening respectively to press the battery monomers, so that the battery monomers are fixed in the shell through the first end cover and the second end cover.

[0003] In the process of welding the first end cover and the second end cover to the shell (the shell mentioned below is provided with the battery monomers), first, the shell is fixed by a fixing clamp, at this time, the first opening of the shell faces upward and corresponds to the welding position, and the first end cover is welded to the first opening, then, the shell is disassembled from the fixing clamp as a whole, and the position and angle of the shell are manually adjusted to adjust the second opening of the shell to face upward and correspond to the welding position, finally, the shell after adjustment is fixed again by the fixing clamp, and the second end cover is welded to the second opening to form a complete structure of the battery.

[0004] However, the above operation needs to repeatedly install and disassemble the shell provided with the battery monomers, which is complicated and time-consuming and laborious, so that the welding efficiency of the battery is low.

[0005] In view of the above problems, a battery module welding device is needed to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a battery module welding device, which can directly rotate and adjust the top and bottom of the to-be-welded module on the Z axis, is simple and convenient to operate, saves time and effort, and can improve the welding efficiency of the battery module.

[0007] To achieve this purpose, the utility model adopts the following technical scheme:

[0008] The battery module welding device comprises:

[0009] A support member;

[0010] A rotating member is arranged on the first side of the support member and rotates around the X axis, the to-be-welded module is arranged on the second side of the rotating member, and the rotating member is used to rotate the first opening or the second opening of the to-be-welded module to the welding position;

[0011] A fixing member is arranged on the second side of the rotating member, and the fixing member can fix the to-be-welded module on the rotating member.

[0012] As an option, the battery module welding device further comprises:

[0013] A rotating disc is arranged between the rotating member and the support member along the X axis, and one end of the rotating disc is rotatably connected to the first side of the support member along the X axis, and the other end of the rotating disc is fixedly connected to the rotating member.

[0014] As an option, the rotating member comprises:

[0015] A first plate is fixedly connected to the other end of the rotating disc;

[0016] A second plate is connected to the opposite ends of the first plate along the Z axis, and the fixing member is installed on the second side of the second plate, and the fixing member abuts the opposite ends of the battery module to be welded on the Z axis on the second side of the two second plates, respectively; the length of the first plate along the Y axis is less than the length of the second plate, and the X axis, the Y axis and the Z axis are perpendicular to each other.

[0017] As an option, the fixing member is adjustably installed on the second side of the second plate, and two fixing members are arranged on each second plate along the Y axis.

[0018] As an option, the battery module welding device further comprises:

[0019] A limiting member is arranged between the rotating member and the support member, and the limiting member is used to limit the rotation position of the rotating member along the X axis.

[0020] As an option, the limiting member comprises:

[0021] A limiting bolt, the end of the limiting bolt is threaded through the rotating member along the X axis and abuts to the first side of the support member.

[0022] As an option, the limiting member comprises:

[0023] An elastic protrusion and an arc-shaped clamping groove, one of the rotating member and the support member is provided with the elastic protrusion, and the other is provided with the arc-shaped clamping groove, the elastic protrusion can be elastically clamped or elastically separated from the arc-shaped clamping groove; when the elastic protrusion is clamped with the arc-shaped clamping groove, the first opening or the second opening of the battery module to be welded is rotated to the welding position.

[0024] As an option, the battery module welding device further comprises:

[0025] A positioning member is arranged on the rotating member, and the positioning member is connected with the battery module to be welded, and the positioning member is used for positioning the battery module to be welded.

[0026] As an option, the battery module welding device further comprises:

[0027] A universal wheel is arranged between the rotating member and the supporting member, one end of the universal wheel is connected to the rotating member, and the other end is in contact with the first side of the supporting member.

[0028] As an option, a guide rail is arranged on the first side of the supporting member, the guide rail is in the shape of a ring, and the end of the universal wheel close to the supporting member is in sliding fit with the guide rail.

[0029] The battery module welding device has the following beneficial effects:

[0030] The rotating member is arranged on the first side of the supporting member around the X-axis, the battery module to be welded is arranged on the second side of the rotating member, the fixing member arranged on the second side of the rotating member is used for fixing the battery module to be welded on the second side of the rotating member, so as to realize the fixed connection between the rotating member and the battery module to be welded; the rotating member is rotated around the X-axis relative to the supporting member, so as to drive the whole battery module to be welded to rotate around the X-axis synchronously, so that the first opening and the second opening of the battery module to be welded can be rotated to the welding position in sequence, so as to facilitate welding of the first end cover to the first opening at the welding position and welding of the second end cover to the second opening at the welding position; compared with the prior art, after the first end cover is welded to the first opening, the whole battery module to be welded does not need to be disassembled from the rotating member and then manually adjusted, so that the second opening of the shell can be automatically rotated to face upward and correspond to the welding position, so as to facilitate direct welding of the second end cover to the second opening; that is, the top and the bottom of the battery module to be welded can be directly adjusted, the battery module to be welded does not need to be repeatedly installed and disassembled, the operation is simple and convenient, time and labor are saved, and the welding efficiency of the battery module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of the battery module welding device provided in the utility model Figure 1 ;

[0032] Figure 2 is a structural schematic diagram of the battery module welding device (except the workbench and the triangular rod) provided in the utility model Figure 2 ;

[0033] Figure 3 is a structural schematic diagram of the shell (provided with one fixing member) provided in the utility model

[0034] Figure 4Is the side view of the battery module welding device (remove the workbench) provided in the utility model;

[0035] Figure 5 Is Figure 1 The local amplification structure schematic view of A in the middle.

[0036] Mark explanation:

[0037] 1-wait to weld module;11-housing;111-positioning lug;112-first opening;113-second opening;12-battery monomer;

[0038] 2-supporting piece;21-supporting plate;211-first side;212-guide rail;22-triangle rod;

[0039] 3-rotary part;31-first plate;32-second plate;321-second side;

[0040] 4-fixed part;5-rotating disc;6-limiting part;7-positioning part;8-omni wheel;9-workbench. Specific implementation

[0041] All the features disclosed in the specification, or the steps in all the disclosed methods or processes, can be combined in any way, except for mutually exclusive features and / or steps.

[0042] Any feature disclosed in the specification, unless specifically stated, can be replaced by other equivalent or similar features. That is, each feature is only one example in a series of equivalent or similar features, unless specifically stated. Throughout the specification, the same reference signs indicate the same elements.

[0043] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained by specific implementation manners in combination with the drawings below.

[0044] Currently, battery modules consist of a housing, individual battery cells, a first end cap, and a second end cap. Several individual battery cells are housed within the housing, and the first and second end caps are welded to the first and second openings of the housing, respectively. The process of welding the first and second end caps to the housing (in which the individual battery cells are housed) involves: first, fixing the housing with clamps, ensuring the first opening faces upwards and aligns with the welding position, and then welding the first end cap to the first opening; next, removing the entire housing from the clamps and manually adjusting its position and angle to align the second opening upwards with the welding position; finally, re-fixing the adjusted housing with clamps and welding the second end cap to the second opening to form a complete battery module structure. However, this process requires repeated installation and removal of the housing containing the individual battery cells, making it complex, cumbersome, time-consuming, and labor-intensive, resulting in low welding efficiency for the battery module.

[0045] Therefore, such as Figures 1 to 4 As shown, this embodiment proposes a battery module welding device. The battery module includes a housing 11, a plurality of individual battery cells 12, a first end cap, and a second end cap. The plurality of individual battery cells 12 are disposed within the housing 11 to form a module 1 to be welded. A first opening 112 and a second opening 113 are respectively provided at opposite ends of the housing 11. The first end cap and the second end cap are welded to the first opening 112 and the second opening 113 respectively to form a complete battery module structure. This battery module welding device simplifies and facilitates the welding operation of the battery module, saving time and effort, thereby improving the welding efficiency of the battery module and increasing the production capacity of the battery module. Here, the specific type of battery module is not limited.

[0046] Specifically, such as Figures 1 to 4 As shown, the battery module welding device includes a support member 2, a rotating member 3, and a fixing member 4. The rotating member 3 is rotatably mounted on the first side 211 of the support member 2 around the X-axis. The module 1 to be welded is placed against the second side 321 of the rotating member 3. The first side 211 and the second side 321 are spaced apart on the X-axis, and the rotating member 3 is used to rotate the first opening 112 or the second opening 113 of the module 1 to be welded to the welding position. The fixing member 4 is installed on the second side 321 of the rotating member 3, and the fixing member 4 can fix the module 1 to be welded on the second side 321 of the rotating member 3. Here, the specific orientation of the welding position is not limited, as long as the first opening 112 and the second opening 113 of the housing 11 correspond to the welding position respectively, to facilitate welding.

[0047] The battery module welding device in the embodiment changes the adjustment mode of the position and angle of the to-be-welded module 1 relative to the prior art. The first side 211 of the support 2 is provided with the rotating member 3 by rotating the rotating member 3 around the X axis, and the to-be-welded module 1 formed by arranging the battery monomer 12 in the shell 11 is arranged on the second side 321 of the rotating member 3. The to-be-welded module 1 is arranged on the second side 321 of the rotating member 3, and the fixing member 4 arranged on the second side 321 of the rotating member 3 is used to fix the to-be-welded module 1 on the second side 321 of the rotating member 3, so as to realize the fixed connection between the rotating member 3 and the to-be-welded module 1. The rotating member 3 is rotated around the X axis relative to the support 2 to drive the entire to-be-welded module 1 to rotate around the X axis, so that the first opening 112 and the second opening 113 of the shell 11 in the to-be-welded module 1 can be rotated to the welding position in sequence, so as to facilitate welding of the first end cover to the first opening 112 at the welding position and welding of the second end cover to the second opening 113 at the welding position. Relative to the prior art, after the first end cover is welded to the first opening 112, the entire to-be-welded module 1 does not need to be detached from the rotating member 3 and manually adjusted, so that the second opening 113 of the shell 11 can be automatically rotated to correspond to the welding position upward, so as to directly weld the second end cover to the second opening 113. That is, the top and bottom of the shell 11 can be directly adjusted without repeated installation and disassembly of the to-be-welded module 1, which is simple and convenient to operate, saves time and effort, and further improves the welding efficiency of the battery module.

[0048] Specifically, as shown in Figure 1 , the battery module welding device further comprises a workbench 9, and the support 2 is fixedly connected to the workbench 9 to provide stable support for the support 2, thereby ensuring the working stability and reliability of the support 2.

[0049] Specifically, as shown in Figure 1 and Figure 4 , the support 2 comprises a support plate 21 and a triangular rod 22. The length of the support plate 21 extends along the Z axis, and a plurality of triangular rods 22 are connected to one side of the support plate 21 away from the rotating member 3. Each triangular rod 22 is spaced apart along the Y axis, and each triangular rod 22 is fixedly connected to the workbench 9 to realize the fixed connection of the entire support 2 to the workbench 9. The triangular rod 22 can be a right-angled triangular rod, and two triangular rods 22 are connected to the support plate 21. Here, the specific number of triangular rods 22 is not limited.

[0050] The support plate 21 and each triangular rod 22 are connected to each other to form a support 2. On the one hand, the structure of the support 2 formed in this way has good stability. On the other hand, the structure of the entire support 2 is simple, occupies a small area, and has a relatively light weight, which is conducive to the lightweight design of the support 2.

[0051] Furthermore, such as Figure 2 and Figure 4 As shown, the battery module welding device also includes a turntable 5. Along the X-axis, the turntable 5 is disposed between the rotating component 3 and the support plate 21 of the support component 2, and one end of the turntable 5 is rotatably connected to the first side 211 of the support plate 21 around the X-axis, and the other end of the turntable 5 is fixedly connected to the rotating component 3.

[0052] By setting up a turntable 5, the rotating component 3 can be driven to rotate relative to the support plate 21 around the X-axis while the turntable 5 rotates around the X-axis, thus achieving synchronous rotation of the turntable 5 and the rotating component 3. The turntable 5 can be driven automatically by a servo motor or manually; no specific limitation is made here.

[0053] Specifically, such as Figure 2 and Figure 4 As shown, the rotating component 3 includes a first plate 31 and two second plates 32; wherein, the other end of the turntable 5 is fixedly connected to the first plate 31, and the two opposite ends of the first plate 31 on the Z-axis are respectively connected to the second plates 32, and the fixing component 4 is installed on the second side 321 of the second plate 32. In this embodiment, the first plate 31 and the two second plates 32 are integrally formed structures.

[0054] Specifically, such as Figure 2 and Figure 4 As shown, the fastener 4 abuts the two opposite ends of the module 1 to be welded on the Z-axis against the second sides 321 of the two second plates 32 respectively; at the same time, the middle part of the module 1 to be welded abuts against the second side 321 of the first plate 31.

[0055] Furthermore, such as Figure 2 and Figure 4 As shown, the first plate 31 and the two second plates 32 are connected to each other to form an I-shaped structure. Specifically, the length of the first plate 31 on the Y-axis is less than the length of the second plate 32. On the one hand, this allows the longer second plate 32 to provide usable space for the installation of the fastener 4, ensuring the smooth installation of the fastener 4 on the second plate 32. On the other hand, the shorter first plate 31 reduces the weight of the entire rotating component 3, which is beneficial for the lightweight design of the rotating component 3 and makes the structure of the rotating component 3 simpler and more compact. Thirdly, the first plate 31 and the two second plates 32 enclose a clearance space on one side of the first plate 31 along the Y-axis, which facilitates the handling and fixing of the module 1 to be welded. The X-axis, Y-axis and Z-axis are perpendicular.

[0056] Specifically, the fixing member 4 is adjustably mounted on the second side 321 of the second plate 32, so that the mounting position of the fixing member 4 can be adjusted according to the specific size of the battery module 1 to be welded, so that the mounting position of the fixing member 4 matches the size of the battery module 1 to be welded, thereby ensuring that the fixing member 4 can press the battery module 1 of various sizes to be welded onto the rotating member 3, thereby improving the applicability and versatility of the entire battery module welding device.

[0057] Further, as shown in Figure 1 and Figure 2 , along the Y axis, each second plate 32 is provided with two fixing members 4 arranged opposite to each other, so that the fixing effect of the battery module 1 to be welded by the two fixing members 4 arranged opposite to each other is better, so that the battery module 1 to be welded is more stably pressed by each fixing member 4 on the second side 321 of the rotating member 3.

[0058] Specifically, as shown in Figure 1 and Figure 2 , along the Z axis, each second plate 32 can be provided with a plurality of fixing members 4, so as to further ensure that the battery module 1 to be welded is more stably pressed by each fixing member 4 on the second side 321 of the rotating member 3. In the embodiment, one fixing member 4 is arranged on each second plate 32 along the Z axis, that is, four fixing members 4 are arranged in the embodiment.

[0059] It is worth noting that the fixing member 4 can adopt the common fixing clamp structure in the prior art, that is, as shown in Figure 3 , the fixing clamp mainly includes a handle and a pressing head connected by a hinge, and the pressing head can be swung by rotating the handle, so as to realize the pressing or separation between the pressing head and the shell 11, thereby realizing the quick pressing and separation between the fixing member 4 and the shell 11.

[0060] Further, as shown in Figure 1 , Figure 2 and Figure 5 , the battery module welding device further comprises a limiting member 6, which is arranged between the second plate 32 of the rotating member 3 and the support plate 21 of the support member 2, and the limiting member 6 is used to limit the rotation position of the rotating member 3 around the X axis.

[0061] By setting the limiting piece 6, the rotating position of the rotating piece 3 around the X axis can be limited, that is, when the first opening 112 of the shell 11 is rotated around the X axis to correspond to the welding position, or when the second opening 113 of the shell 11 is rotated around the X axis to correspond to the welding position, at this time, the rotating piece 3 cannot continue to rotate around the X axis by the limiting piece 6, that is, the rotating piece 3 and the to-be-welded module 1 are integrally limited and fixed at this position, so as to ensure the stability of welding the first end cover to the first opening 112 and welding the second end cover to the second opening 113, avoid the position deviation of the shell 11 and the entire to-be-welded module 1 during welding, and further better guarantee the welding quality of the battery module.

[0062] Specifically, a threaded hole is arranged on the second plate 32; and the limiting piece 6 includes a limiting bolt, an end of the limiting bolt is screwed through the threaded hole of the second plate 32 along the X axis and abuts against the first side 211 of the support plate 21, so as to realize the limiting and fixing of the position of the rotating piece 3 through the threaded connection between the limiting bolt and the second plate 32 and the abutting action between the limiting bolt and the support plate 21.

[0063] In other embodiments, the limiting piece 6 can also include an elastic protrusion and an arc-shaped clamping groove, one of the second plate 32 of the rotating piece 3 and the support plate 21 of the support 2 is provided with the elastic protrusion, and the other is provided with the arc-shaped clamping groove, the elastic protrusion can be elastically clamped or elastically separated from the arc-shaped clamping groove, so as to realize the limiting and fixing of the position of the rotating piece 3 through the elastic clamping and elastic separation between the elastic protrusion and the arc-shaped clamping groove. Specifically, when the elastic protrusion is clamped with the arc-shaped clamping groove, one end of the to-be-welded module 1, that is, the first opening 112 or the second opening 113, is just rotated to the welding position.

[0064] In another embodiment, the limiting piece 6 can also include a limiting pin and a limiting groove, the setting position of the limiting pin and the setting position of the limiting groove are matched with the welding position, the limiting groove is arranged on the first side 211 of the support plate 21, and the limiting pin is inserted into the limiting groove after passing through the second plate 32 along the X axis, so as to realize the limiting and fixing of the position of the rotating piece 3 through the insertion action between the limiting pin and the limiting groove. Specifically, when the limiting pin is inserted into the limiting groove of the support plate 21 after passing through the second plate 32, one end of the to-be-welded module 1, that is, the first opening 112 or the second opening 113, is just rotated to the welding position. Here, the specific structure of the limiting piece 6 is not limited, as long as it can realize the limiting and fixing of the position of the rotating piece 3.

[0065] Further, as shown in FIG. 6, the limiting piece 6 can also include a limiting pin and a limiting groove, the setting position of the limiting pin and the setting position of the limiting groove are matched with the welding position, the limiting groove is arranged on the first side 211 of the support plate 21, and the limiting pin is inserted into the limiting groove after passing through the second plate 32 along the X axis, so as to realize the limiting and fixing of the position of the rotating piece 3 through the insertion action between the limiting pin and the limiting groove. Specifically, when the limiting pin is inserted into the limiting groove of the support plate 21 after passing through the second plate 32, one end of the to-be-welded module 1, that is, the first opening 112 or the second opening 113, is just rotated to the welding position. Here, the specific structure of the limiting piece 6 is not limited, as long as it can realize the limiting and fixing of the position of the rotating piece 3. Figure 2 , Figure 3 and Figure 5As shown, the battery module welding device further comprises a positioning member 7, which is arranged on the rotating member 3 and connected with the module 1 to be welded, and is used for positioning the module 1 to be welded.

[0066] Specifically, as shown in Figure 2 , Figure 3 and Figure 5 , a positioning lug 111 is protruded along the edge of the opening on the housing 11 near the first opening 112 and / or the second opening 113, and a positioning hole is arranged on the positioning lug 111; the positioning member 7 is arranged on the second plate 32 of the rotating member 3, and is used for being inserted into the positioning hole. In this embodiment, the positioning member 7 can be a positioning pin.

[0067] By inserting the positioning member 7 on the second plate 32 through the corresponding positioning lug 111, on the one hand, the position of the module 1 to be welded on the rotating member 3 can be positioned, ensuring the accuracy of the position of the module 1 to be welded on the rotating member 3, and further ensuring that the first opening 112 and the second opening 113 of the housing 11 are accurately corresponding to the welding positions respectively, so as to better ensure the welding quality of the battery module; on the other hand, a certain fixed connection effect can be provided for the module 1 to be welded and the rotating member 3 through the positioning action between the positioning member 7 and the positioning lug 111, so as to ensure that the rotation synchronization of the module 1 to be welded and the rotating member 3 is good. The number of the positioning member 7 and the positioning lug 111 can be set to be multiple, and one positioning member 7 is inserted into one positioning lug 111.

[0068] Further, as shown in Figure 4 , the battery module welding device further comprises universal wheels 8, which are arranged between the second plate 32 of the rotating member 3 and the support plate 21 of the support member 2, one end of the universal wheel 8 is connected to the rotating member 3, and the other end of the universal wheel 8 is in contact with the first side 211 of the support plate 21. The end of the universal wheel 8 in contact with the support plate 21 can roll on the support plate 21 when the rotating member 3 rotates around the X-axis. Specifically, two or more universal wheels 8 can be arranged. In this embodiment, four universal wheels 8 are arranged, two universal wheels 8 are arranged on each second plate 32, and each universal wheel 8 is arranged between the corresponding second plate 32 and the support plate 21.

[0069] By arranging the universal wheel 8, on the one hand, the universal wheel 8 can roll along with the rotating member 3 when the rotating member 3 rotates around the X-axis, so as to reduce the friction between the rotating member 3 and the support plate 21, thereby better protecting the rotating member 3 and the support plate 21; on the other hand, the universal wheel 8 can provide a certain support for the rotating member 3, so as to ensure the stability of the rotating member 3 during the whole rotation process around the X-axis.

[0070] Further, as shown in Figure 1 andFigure 2 As shown, the several universal wheels 8 are distributed in equidistant annular form, a guide rail 212 is arranged on the first side 211 of the support plate 21 in a circular ring shape, and the end of the universal wheel 8 close to the support 2 is in sliding fit with the guide rail 212. In the embodiment, the guide rail 212 is a guide groove in a circular ring shape opened on the first side 211 of the support plate 21, the end of the universal wheel 8 can extend into the guide groove, and rotates along the guide rail 212 with the rotation of the rotating piece 3, so as to provide a guide for the rotation of the rotating piece 3 through the mutual fit between the guide rail 212 and the universal wheel 8, thereby ensuring the guidance and stability of the rotating piece 3 rotating around the X axis relative to the support plate 21.

[0071] The battery module welding device in the embodiment can realize the direct rotation of the top and bottom of the welding module 1 by synchronously rotating the welding module 1 and the rotating piece 3 around the X axis, without the need of manually adjusting the welding module 1 after being detached from the rotating piece 3, so as to improve the welding efficiency of the battery.

[0072] The battery module welding device in the embodiment can stably fix the welding module 1 on the second side 321 of the rotating piece 3 through the fixed piece 4 and the positioning piece 7, so as to ensure the stable connection between the rotating piece 3 and the welding module 1, and further ensure the synchronous rotation of the rotating piece 3 and the welding module 1, thereby ensuring the welding quality of the battery.

[0073] The battery module welding device in the embodiment can accurately position the placement position of the welding module 1 on the rotating piece 3 by inserting the positioning piece 7 into the positioning lug 111 of the shell 11, and limit and fix the rotation position of the rotating piece 3 along the X axis through the limiting piece 6, thereby ensuring the welding quality of the battery.

[0074] The above is only the preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation and application range can be changed, and the content of the specification should not be understood as the limitation of the present application.

Claims

1. A battery module welding device, characterized in that, include: Support component (2); A rotating component (3) is rotatably disposed on the first side (211) of the support component (2) around the X-axis. The module (1) to be welded is placed on the second side (321) of the rotating component (3). The rotating component (3) is used to drive the first opening (112) or the second opening (113) of the module (1) to be welded to rotate to the welding position. A fixing member (4) is provided on the second side (321) of the rotating member (3), and the fixing member (4) can fix the module (1) to be welded on the rotating member (3).

2. The battery module welding apparatus as described in claim 1, characterized in that, The battery module welding device also includes: A turntable (5) is located along the X-axis between the rotating member (3) and the support member (2). One end of the turntable (5) is rotatably connected to the first side (211) of the support member (2) around the X-axis, and the other end of the turntable (5) is fixedly connected to the rotating member (3).

3. The battery module welding apparatus as described in claim 2, characterized in that, The rotating component (3) includes: The first plate (31), and the other end of the turntable (5) is fixedly connected to the first plate (31); The second plate (32) is connected to the opposite ends of the first plate (31) on the Z-axis. The fixing member (4) is installed on the second side (321) of the second plate (32). The fixing member (4) abuts the opposite ends of the module (1) to be welded on the Z-axis against the second sides (321) of the two second plates (32). The length of the first plate (31) on the Y-axis is less than the length of the second plate (32). The X-axis, Y-axis and Z-axis are perpendicular to each other.

4. The battery module welding apparatus as described in claim 3, characterized in that, The fastener (4) is adjustablely mounted to the second side (321) of the second plate (32), and two fasteners (4) are provided opposite to each other on each second plate (32) along the Y-axis.

5. The battery module welding apparatus as described in any one of claims 1-4, characterized in that, The battery module welding device also includes: A limiting member (6) is disposed between the rotating member (3) and the supporting member (2), and the limiting member (6) is used to limit the rotational position of the rotating member (3) around the X-axis.

6. The battery module welding apparatus as described in claim 5, characterized in that, The limiting member (6) includes: A limiting bolt, the end of which is threaded along the X-axis through the rotating member (3) and abuts against the first side (211) of the support member (2).

7. The battery module welding apparatus as described in claim 5, characterized in that, The limiting member (6) includes: The elastic protrusion and the arc-shaped groove are provided on one of the rotating part (3) and the supporting part (2), and the arc-shaped groove is provided on the other. The elastic protrusion can elastically engage or elastically disengage from the arc-shaped groove. When the elastic protrusion engages with the arc-shaped groove, the first opening (112) or the second opening (113) of the module to be welded (1) rotates to the welding position.

8. The battery module welding apparatus according to any one of claims 1-4, characterized in that, The battery module welding device also includes: A positioning element (7) is disposed on the rotating element (3). The positioning element (7) is connected to the module to be welded (1). The positioning element (7) is used to position the module to be welded (1).

9. The battery module welding apparatus according to any one of claims 1-4, characterized in that, The battery module welding device also includes: A caster wheel (8) is disposed between the rotating member (3) and the supporting member (2). One end of the caster wheel (8) is connected to the rotating member (3), and the other end is in contact with the first side (211) of the supporting member (2).

10. The battery module welding apparatus as described in claim 9, characterized in that, A guide rail (212) is provided on the first side (211) of the support member (2). The guide rail (212) is in the shape of a ring. The universal wheel (8) is slidably engaged with the guide rail (212) at one end near the support member (2).

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